(Not using the wizard)

When I select the database with View->Data Sources I can select the sheet of a spreadsheet to be used. After File->Print I can select the sheet once again. This is not bad, but unnecessary. 

What I consider a bug, is that it does not apply the selected database, in neither case, when I use a pre-formatted text file. 

To be clearer: I use a standard template with always the same field identifiers (column headers). That works very well.
But: when I create a new set of data, as a new data source, and select this new source, either in the first or second step as above, it will never relate these new data into the mail merge. Instead, it will use the original, first, values. In order to use the newer data, I have to first delete the <column headers> in the writer file, and re-drag the column headers of the same names into the text document. This is a work around, but boring. 

I would expect that the new values/data are used when I click the new database sheet in mail merge. The automatism of using placeholders of a fixed name (column header) is only a half-brew when the database records can not be updated by selecting a new database with the same identifiers.